The Yggdrasill Corporation is a massive corporation located in the city of Zawame, providing for just about anything the city needs for living and growth of civilization, from clothing to transportation to even waste disposal, as well as healthcare and education. Its omnipresence in the city's socioeconomic development makes the populace feel that they are living in a castle town rather than a bustling city. Yggdrasill Corporation is one of the two antagonist groups of Kamen Rider Gaim, along with the Overlord Inves.